More than two million Americans are currently living with a lost limb. The use of artificial limbs has been around for millennia, dating back to ancient Egyptians. However, it wasn't until 1912 that lighter, aluminum prosthesis were available. The 21st century will no doubt be remembered as a significant step forward in prosthetic functionality as well. Through the combination of flexible materials that mimic human skin and sensory-enabled technologies, researchers are helping amputees become more functional and improve their overall quality of life.